add the missing FindLibedit cmake script

CMakeScripts/FindLibedit.cmake

+# - Try to find libedit
+# Once done this will define
+#
+#  Libedit_FOUND - system has libedit
+#  Libedit_INCLUDE_DIRS - the libedit include directory
+#  Libedit_LIBRARIES - Link these to use libedit
+#  Libedit_DEFINITIONS - Compiler switches required for using libedit
+#
+#  Copyright (c) 2008 Andreas Schneider <mail@cynapses.org>
+#  Modified for other libraries by Lasse Kärkkäinen <tronic>
+#
+#  Redistribution and use is allowed according to the terms of the New
+#  BSD license.
+#  For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+#
+
+
+if (Libedit_LIBRARIES AND Libedit_INCLUDE_DIRS)
+  # in cache already
+  set(Libedit_FOUND TRUE)
+else (Libedit_LIBRARIES AND Libedit_INCLUDE_DIRS)
+  # use pkg-config to get the directories and then use these values
+  # in the FIND_PATH() and FIND_LIBRARY() calls
+  if (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
+    include(UsePkgConfig)
+    pkgconfig(libedit _Libedit_INCLUDEDIR _Libedit_LIBDIR _Libedit_LDFLAGS _Libedit_CFLAGS)
+  else (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
+    find_package(PkgConfig)
+    if (PKG_CONFIG_FOUND)
+      pkg_check_modules(_LIBEDIT libedit)
+    endif (PKG_CONFIG_FOUND)
+  endif (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
+  find_path(Libedit_INCLUDE_DIR
+    NAMES
+      histedit.h
+    PATHS
+      ${_Libedit_INCLUDEDIR}
+      /usr/include
+      /usr/local/include
+      /opt/local/include
+      /sw/include
+    PATH_SUFFIXES
+      editline
+  )
+  
+  find_library(Libedit_LIBRARY
+    NAMES
+      edit
+    PATHS
+      ${_Libedit_LIBDIR}
+      /usr/lib
+      /usr/local/lib
+      /opt/local/lib
+      /sw/lib
+  )
+
+  if (Libedit_LIBRARY)
+    set(Libedit_FOUND TRUE)
+  endif (Libedit_LIBRARY)
+
+  set(Libedit_INCLUDE_DIRS
+    ${Libedit_INCLUDE_DIR}
+  )
+
+  if (Libedit_FOUND)
+    set(Libedit_LIBRARIES
+      ${Libedit_LIBRARIES}
+      ${Libedit_LIBRARY}
+    )
+  endif (Libedit_FOUND)
+
+  if (Libedit_INCLUDE_DIRS AND Libedit_LIBRARIES)
+     set(Libedit_FOUND TRUE)
+  endif (Libedit_INCLUDE_DIRS AND Libedit_LIBRARIES)
+
+  if (Libedit_FOUND)
+    if (NOT Libedit_FIND_QUIETLY)
+      message(STATUS "Found libedit: ${Libedit_LIBRARY}")
+    endif (NOT Libedit_FIND_QUIETLY)
+  else (Libedit_FOUND)
+    if (Libedit_FIND_REQUIRED)
+      message(FATAL_ERROR "Could not find libedit")
+    endif (Libedit_FIND_REQUIRED)
+  endif (Libedit_FOUND)
+
+  # show the Libedit_INCLUDE_DIRS and Libedit_LIBRARIES variables only in the advanced view
+  mark_as_advanced(Libedit_INCLUDE_DIRS Libedit_LIBRARIES)
+
+endif (Libedit_LIBRARIES AND Libedit_INCLUDE_DIRS)
+